[Bluetooth] Correct SCO buffer size on request

This patch introduces a quirk that allows the drivers to tell the host
to correct the SCO buffer size values.

Signed-off-by: Olivier Galibert <galibert@pobox.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

2 files changed, 7 insertions, 0 deletions

diff --git a/drivers/bluetooth/hci_usb.c b/drivers/bluetooth/hci_usb.c
index 987a3dff8af9..6a0c2230f82f 100644
--- a/drivers/bluetooth/hci_usb.c
+++ b/drivers/bluetooth/hci_usb.c
@@ -122,6 +122,9 @@ static struct usb_device_id blacklist_ids[] = {
         /* RTX Telecom based adapter with buggy SCO support */
         { USB_DEVICE(0x0400, 0x0807), .driver_info = HCI_BROKEN_ISOC },
 
+        /* Belkin F8T012 */
+        { USB_DEVICE(0x050d, 0x0012), .driver_info = HCI_WRONG_SCO_MTU },
+
         /* Digianswer devices */
         { USB_DEVICE(0x08fd, 0x0001), .driver_info = HCI_DIGIANSWER },
         { USB_DEVICE(0x08fd, 0x0002), .driver_info = HCI_IGNORE },
@@ -987,6 +990,9 @@ static int hci_usb_probe(struct usb_interface *intf, const struct usb_device_id
         if (reset || id->driver_info & HCI_RESET)
                 set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
 
+        if (id->driver_info & HCI_WRONG_SCO_MTU)
+                set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
+
         if (id->driver_info & HCI_SNIFFER) {
                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
diff --git a/drivers/bluetooth/hci_usb.h b/drivers/bluetooth/hci_usb.h
index 37100a6ea1a8..963fc55cdc85 100644
--- a/drivers/bluetooth/hci_usb.h
+++ b/drivers/bluetooth/hci_usb.h
@@ -35,6 +35,7 @@
 #define HCI_SNIFFER             0x10
 #define HCI_BCM92035            0x20
 #define HCI_BROKEN_ISOC         0x40
+#define HCI_WRONG_SCO_MTU       0x80
 
 #define HCI_MAX_IFACE_NUM       3